CVE-2026-13117

EUVD-2026-51234
An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
OpenVPNCNA
6 MEDIUM
NETWORK
HIGH
LOW
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
openvpnopenvpn
2.6.0 ≤
𝑥
≤ 2.6.20
CNA
openvpnopenvpn
𝑥
≤ 2.7.4
CNA
Debian logo
Debian Releases
Debian Product
Codename
openvpn
bookworm
2.6.14-0+deb12u2
fixed
bookworm (security)
2.6.14-0+deb12u2
fixed
bullseye
2.5.1-3
fixed
bullseye (security)
2.5.1-3+deb11u4
fixed
forky
2.7.5-1
fixed
sid
2.7.5-1
fixed
trixie
2.6.14-1+deb13u3
fixed
trixie (security)
2.6.14-1+deb13u3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
openvpn
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
Fixed 2.6.19-0ubuntu0.24.04.3
released
questing
ignored
resolute
Fixed 2.7.0-1ubuntu1.2
released
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026
https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026
https://community.openvpn.net/Security%20Announcements/CVE-2026-13117